If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
slow PATA disk in Centos
While building some workstations with Centos operating system,
I found some Deskstar 320 GB PATA disks that were hardly used (about 30 hours). I used these for swap and tmp, although swap shouldn't be used, as there is heaps of RAM. I used SATA disks for root and home. Now I find this Deskstar is very slow on one workstation. Benchmark gives 4 MB/s read, when it should do about 100. The Deskstar disk is 7200 RPM and supports UDMA6. The mainboard uses a Jmicron chip for PATA, which also supports UDMA6. It is connected with 80-conductors cable. I swapped the Deskstar drive and the cable, and slowness seems to be in the mainboard. RHEL generic IDE driver is claimed to support the JMB368 since version 4.6, and I have version 5.10. hdparm shows the drive is running in UDMA5, which is ATA100 instead of maximum ATA133, but is way faster than 4 MB/s The SMART data shows no problems with the drives. |
#2
|
|||
|
|||
slow PATA disk in Centos
|
#3
|
|||
|
|||
slow PATA disk in Centos
On Wednesday, June 25, 2014 1:16:11 AM UTC+8, Paul wrote:
It does sound to me like PIO mode (4 to 7MB/sec), so you're looking in the right area. You would think of all utilities, hdparm would know what it was talking about. If there is a dmesg, see what happens to the drive when it is detected, and whether any anomalies are noted. I know that when Win2000/XP counted disk errors, they ratcheted the speed down until you ended up with PIO. I don't know if linux kernels do the same. I'll put it down to a flaky interface, and use a SATA disk instead to get it going. |
#4
|
|||
|
|||
slow PATA disk in Centos
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
PATA 100 and 133 hard disk on the same cable? | stevels70 | Homebuilt PC's | 2 | May 9th 06 12:55 PM |
Slow Southbridge PATA on P4C800 E D | LM | Asus Motherboards | 5 | December 22nd 05 02:58 AM |
p4c800-e deluxe slow pata | Kyle Peterson | Asus Motherboards | 11 | December 14th 05 11:39 PM |
P4C800-E SATA disk and PATA dvd | codeater | Asus Motherboards | 0 | August 29th 04 08:38 AM |